package j20251012;

public class Demo1 {
    public static int count=0;

    public static void main(String[] args) throws InterruptedException {
        //创建锁对象
        Object locker=new Object();
        Thread t1 =new Thread(()->{
            for(int i=0;i<10000;i++){
                synchronized (locker) {
                    count++;
                }
            }
        });

        Thread t2 =new Thread(()->{
            for(int i=0;i<10000;i++){
                synchronized (locker) {
                    count++;
                }
            }
        });
        t1.start();
        t2.start();
        t1.join();
        t2.join();
        System.out.println("count="+count);
    }
}
